CSS The object-fit

The CSS object-fit property is used to specify how an <img> or <video> should be resized to fit its container.

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Browser Support

The numbers in the table specify the first browser version that fully supports the property.

Property
object-fit	31.0	16.0	36.0	7.1	19.0

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The CSS object-fit Property

The CSS object-fit property is used to specify how an <img> or <video> should be resized to fit its container.
This property tells the content to fill the container in a variety of ways; such as "preserve that aspect ratio" or "stretch up and take up as much space as possible".
Look at the following image from Paris, which is 400x300 pixels:
However, if we style the image above to be 200x400 pixels, it will look like this:

Example

img {
    width: 200px;
    height: 400px;}

We see that the image is being squeezed to fit the container of 200x400 pixels, and its original aspect ratio is destroyed.
If we use object-fit: cover; it will cut off the sides of the image, preserving the aspect ratio, and also filling in the space, like this:

Example

img {
    width: 200px;
    height: 400px;
    object-fit: cover;}

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Another Example

Here we have two images and we want them to fill the width of 50% of the browser window and 100% of the height.
In the following example we do NOT use object-fit, so when we resize the browser window, the aspect ratio of the images will be destroyed:

Example

In the next example, we use object-fit: cover;, so when we resize the browser window, the aspect ratio of the images is preserved:

Example

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All Values of The CSS object-fit Property

The object-fit property can have the following values:

• fill - This is default. The replaced content is sized to fill the element's content box. If necessary, the object will be stretched or squished to fit
• contain - The replaced content is scaled to maintain its aspect ratio while fitting within the element's content box
• cover - The replaced content is sized to maintain its aspect ratio while filling the element's entire content box. The object will be clipped to fit
• none - The replaced content is not resized
• scale-down - The content is sized as if none or contain were specified (would result in a smaller concrete object size)

The following example demonstrates all the possible values of the object-fit property:

Example

.fill {object-fit: fill;}
.contain {object-fit: contain;}
.cover {object-fit: cover;}
.scale-down {object-fit: scale-down;}
.none {object-fit: none;}

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